scholarly journals Evaluation of a homogeneous assay for high-density lipoprotein cholesterol: limitations in patients with cardiovascular, renal, and hepatic disorders

1998 ◽  
Vol 44 (6) ◽  
pp. 1233-1241 ◽  
Author(s):  
Josep M a Simó ◽  
Isabel Castellano ◽  
Natàlia Ferré ◽  
Jorge Joven ◽  
Jordi Camps
Keyword(s):  
High Density Lipoprotein ◽  
High Density Lipoprotein Cholesterol ◽  
Density Lipoprotein ◽  
High Density ◽  
Lipoprotein Cholesterol ◽  
Control Group ◽  
Healthy Elderly ◽  
Homogeneous Assay ◽  
Calibration Materials ◽  
Group B

Abstract We evaluated the performance of a homogeneous assay for the automated measurement of high-density lipoprotein cholesterol (HDL-C) and compared it with a conventional precipitation technique in the following groups of people: control subjects (group A), clinically-healthy elderly (group B), myocardial infarction patients (group C), nephrotic syndrome patients (group D), and liver cirrhosis patients (group E). The performance of the technique was acceptable with respect to precision, accuracy, linearity, and detection limit. Triglycerides up to 40 mmol/L and bilirubin up to 150 μmol/L did not cause interferences. Hemoglobin decreased HDL-C measurements. Samples were stable at −20 °C for up to four months. Bland–Altman plots showed a good agreement between both techniques in the control group but with a progressive divergence in the patient groups B to E. Results indicate limitations of the technique in certain clinical conditions and, coincidentally, the need for reliable calibration materials.

scholarly journals Effect of fatty Amazon fish consumption on lipid metabolism

2014 ◽  
Vol 27 (1) ◽  
pp. 97-105 ◽  
Author(s):  
Francisca das Chagas do Amaral Souza ◽  
Nadja Pinto Garcia ◽  
Rejane Souza de Aquino Sales ◽  
Jaime Paiva Lopes Aguiar ◽  
Wallice Luiz Paxiúba Duncan ◽  
...  
Keyword(s):  
Lipid Metabolism ◽  
High Density Lipoprotein ◽  
High Density Lipoprotein Cholesterol ◽  
Amazon Basin ◽  
Density Lipoprotein ◽  
High Density ◽  
Lipoprotein Cholesterol ◽  
Control Group ◽  
Fatty Fish ◽  
Serum Triglycerides

OBJECTIVE: The present study aimed to evaluate the effect of feeding diets enriched with fatty fish from the Amazon basin on lipid metabolism. METHODS: Male Wistar rats were divided into four groups: control group treated with commercial chow; Mapará group was fed diet enriched with Hypophthalmus edentatus; Matrinxã group was fed diet enriched with Brycon spp.; and, Tambaqui group was fed diet enriched with Colossoma macropomum. Rats with approximately 240g±0.60 of body weight were fed ad libitum for 30 days, and then were sacrificed for collection of whole blood and tissues. RESULTS: The groups treated with enriched diets showed a significant reduction in body mass and lipogenesis in the epididymal and retroperitoneal adipose tissues and carcass when compared with the control group. However, lipogenesis in the liver showed an increase in Matrinxã group compared with the others groups. The levels of serum triglycerides in the treated groups with Amazonian fish were significantly lower than those of the control group. Moreover, total cholesterol concentration only decreased in the group Matrinxã. High Density Lipoprotein cholesterol levels increased significantly in the Mapará and Tambaqui compared with control group and Matrinxã group. The insulin and leptin levels increased significantly in all treatment groups. CONCLUSION: This study demonstrated that diets enriched with fatty fish from the Amazon basin changed the lipid metabolism by reducing serum triglycerides and increasing high density lipoprotein-cholesterol in rats fed with diets enriched with Mapará, Matrinxã, and Tambaqui.

scholarly journals Hematology and plasma biochemistry in rats fed with diets enriched with fatty fishes from Amazon region

2014 ◽  
Vol 27 (5) ◽  
pp. 547-555 ◽  
Author(s):  
Francisca das Chagas do Amaral Souza ◽  
Wallice Paxiúba Duncan ◽  
Roasany Piccolotto Carvalho
Keyword(s):  
High Density Lipoprotein ◽  
High Density Lipoprotein Cholesterol ◽  
Density Lipoprotein ◽  
Amazon Region ◽  
High Density ◽  
Lipoprotein Cholesterol ◽  
Control Group ◽  
Standard Diet ◽  
Plasma Biochemistry ◽  
Fatty Fish

OBJECTIVE: Rats fed diets enriched with fatty fish from the Amazon region had Hematology and plasma biochemistry analyzed. METHODS: Forty Wistar rats were divided into four groups: control group fed a standard diet; mapará group fed a diet enriched with Hypophthalmus edentatus; matrinxã group fed a diet enriched with Brycon spp.; and tambaqui group fed a diet enriched with Colossoma macropomum. After thirty days the rats had an red blood count and plasma biochemistry. RESULTS: Hematocrit and hemoglobin levels were higher in rats fed tambaqui and matrinxã than in those fed the standard diet of mapará. However, mapará increased cholesterol, especially low-density lipoprotein cholesterol and high-density lipoprotein cholesterol. All fish-enriched diets reduced triacylglycerols. CONCLUSION: Diets enriched with fatty fish from the Amazon region reduce triacylglycerol and increase high-density lipoprotein cholesterol, especially the diet enriched with tambaqui. Tambaqui and matrinxã affected hematocrit and hemoglobin levels, but not mapará. Further research is needed to determine the benefits of diets enriched with fatty fish from the Amazon region.

scholarly journals A two-step homogeneous assay for apolipoprotein E-containing high-density lipoprotein-cholesterol

2018 ◽  
Vol 56 (1) ◽  
pp. 123-132 ◽  
Author(s):  
Yuji Takahashi ◽  
Yasuki Ito ◽  
Toshihiro Sakurai ◽  
Norio Wada ◽  
Atsushi Nagasaka ◽  
...  
Keyword(s):  
High Density Lipoprotein ◽  
Apolipoprotein E ◽  
High Density Lipoprotein Cholesterol ◽  
Density Lipoprotein ◽  
High Density ◽  
Lipoprotein Cholesterol ◽  
In Vivo Studies ◽  
Homogeneous Assay

Background Apolipoprotein E-containing high-density lipoprotein shows antiatherogenic properties in vitro. There is a need for a homogeneous assay to determine the concentration of apolipoprotein E-containing high-density lipoprotein for in vivo studies. Methods In the proposed homogeneous assay, lipoproteins other than apolipoprotein E-containing high-density lipoprotein were eliminated in the first step. Apolipoprotein E-containing high-density lipoprotein-cholesterol was measured in the second step. The control study used a 13% polyethylene glycol precipitation assay (control assay). Results The homogeneous assay showed good performance in validation studies. In subjects with normal liver function ( n = 78), a significant correlation was found between the control assay and the homogeneous assay ( r = 0.824). Serum apolipoprotein E-containing high-density lipoprotein cholesterol concentrations, determined by the control assay and the homogeneous assay, respectively, were 0.05 (0.04–0.10) (median [25th–75th percentile]) mmol/L and 0.10 (0.06–0.13) mmol/L for healthy individuals ( n = 12), and 0.03 (0.01–0.13) mmol/L and 0.02 (0.01–0.02) mmol/L for patients with cholestasis ( n = 6). The results indicate that the homogeneous assay recovers cholesterol contained in physiological apolipoprotein E-containing high-density lipoprotein, but not in pathological apolipoprotein E-containing high-density lipoprotein from cholestatic patients. Conclusions The proposed two-step homogeneous assay enables selective measurement of physiological apolipoprotein E-containing high-density lipoprotein cholesterol in common autoanalysers. This assay might uncover a role for apolipoprotein E-containing high-density lipoprotein in physiological conditions.

Homocysteine and Serum-Lipid Levels in Pulmonary Embolism

2011 ◽  
Vol 17 (6) ◽  
pp. E186-E189 ◽  
Author(s):  
Aysegul Karalezli ◽  
Ebru Sengül Parlak ◽  
Asiye Kanbay ◽  
Aysegul Senturk ◽  
H. Canan Hasanoglu
Keyword(s):  
Pulmonary Embolism ◽  
High Density Lipoprotein ◽  
High Density Lipoprotein Cholesterol ◽  
Serum Lipid ◽  
Density Lipoprotein ◽  
High Density ◽  
Lipoprotein Cholesterol ◽  
Control Group ◽  
Lipid Levels ◽  
Serum Lipid Levels

Pulmonary embolism (PE) is a fatal disease that arises from genetic and environmental factors. There is little evidence for low high-density lipoprotein cholesterol (HDL-C) with hyperhomocysteinemia to lead to PE. Therefore, we evaluated homocysteine levels and lipid profile in PE patients and to display risk for PE. Forty six patients with proven PE and 46 healthy controls were included in the study. Homocysteine and serum lipid levels were calculated and compared in both groups. There were no significant differences between two groups in terms of total cholesterol, triglyceride, and low-density lipoprotein cholesterol. In PE group, HDL-C levels were found significantly lower in comparison to the control group ( P = .004). Mean homocysteine levels were significantly higher in PE group than in the control group ( P = .001). High-density lipoprotein cholesterol levels were significantly low in which homocysteine levels were high in the PE group. We thought that low HDL-C level with hyperhomocysteinemia is susceptible to PE.

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